JP2520826B2 - Concrete pumping device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete pumping device. In particular, it relates to improvements that enable the rapid transport of concrete over long distances or to high altitudes.

[0002]

2. Description of the Related Art A penetration cylinder type concrete pumping device is known as a concrete pumping device for pumping concrete at high speed. The penetration cylinder type concrete pumping apparatus according to the prior art penetrates the penetration cylinder into the concrete hopper, and takes in the concrete of the unit volume determined by the inner volume of the penetration cylinder into the penetration cylinder, and this is taken in. Concrete is pumped at high pressure using a concrete pumping piston.

An example of a penetration cylinder type concrete pumping apparatus according to the prior art will be briefly described with reference to the drawings.

Referring to FIG. 3, in FIG. 3, 1 is a concrete hopper (shown in section), and 2 is watertightly penetrated into one side near the bottom of the concrete hopper 1 and reciprocates in the axial direction. It is a penetrating cylinder (shown in cross section) that has an open tip. Reference numeral 3 is a concrete pumping piston that reciprocates in the penetrating cylinder 2 in the axial direction. Reference numeral 11 is a concrete delivery opening provided on the other side surface of the concrete hopper 1 corresponding to a region where the tip of the penetration cylinder 2 comes into contact, and 12 is a delivery hose (shown in cross section), concrete. The delivery opening 11 communicates with the concrete hopper 1. Reference numeral 4 denotes a ring-shaped seal (shown in cross section) provided around the concrete delivery opening 11.
Is. Reference numeral 5 is a penetration cylinder drive means for driving the penetration cylinder 2, and 6 is a concrete pressure feed piston drive means for driving the concrete pressure feed piston 3.

The concrete temporarily stored in the concrete hopper 1 is slowly agitated by an agitator (not shown) so that the cement and water are not separated from each other and the hardening is not accelerated.

The concrete pumping apparatus shown in FIG. 3 operates as follows. I. (Intake step) The penetration cylinder 2 and the concrete pumping piston 3 are initially in the initial positions indicated by the solid lines in the figure, and the penetration cylinder driving means 5 drives the penetration cylinder 2 in the direction of the arrow A to be stored in the concrete hopper 1. The process which takes in the existing concrete in the penetration cylinder 2 is shown. The broken line shows the position where the penetrating cylinder 2 is moving. The concrete pumping piston 3 remains stopped.

B. (Pressure Feeding Process) With the penetrating cylinder 2 abutting the ring-shaped seal 4, the loading process is terminated and the pressure feeding process is started. At this time, the inside of the penetration cylinder 2 is separated from the concrete hopper 1, and the delivery hose 1
It communicates with 2. Next, the concrete pressure-feeding piston 3 is driven in the direction of arrow B by the concrete pressure-feeding piston driving means 6 to pressure-feed the concrete taken in the penetration cylinder 2 to the delivery hose 7.

C. (Suction Step) When the concrete pressure-feeding piston 3 reaches the same position as the penetration cylinder 2, the pressure-feeding step ends and the suction step is started. In the suction step, the penetration cylinder 2 and the concrete pressure-feeding piston 3 are driven in the direction of arrow C by the penetration cylinder driving means 5 and the concrete pressure-feeding piston driving means 6 to return to the initial position. During this movement, concrete temporarily stored in the concrete hopper 1 is sucked into the volume occupied by the penetrating cylinder 2 as shown by an arrow D. The delivery hose 12 is provided with a check valve near the concrete delivery opening 11.
It prevents the concrete from flowing backwards in the processes other than the pumping process.

One cycle is completed as described above, and the same operation is repeated thereafter, and the concrete corresponding to the internal volume of the penetration cylinder 2 is pulsatingly delivered every cycle.
It will be pressure-fed to 2.

[0010]

Concrete is usually 1
As it has a self-hardening property that hardens in about a time,
In the region between the inner wall of the hopper and the penetrating cylinder 2 (the region where the concrete is not easily agitated), the concrete hardens and is deposited and solidified on the inner wall of the hopper, which has the drawback of impeding the movement of the penetrating cylinder 2.

An object of the present invention is to eliminate this drawback, and concrete can be pressure-fed at high speed and high pressure, and concrete can be transported at high speed to a pouring site separated over a long distance or at a high place. It is to provide a concrete pumping device that can perform.

[0012]

The above object is to provide a concrete hopper (1) and one side surface near the bottom surface of the concrete hopper (1) in a watertight manner and have an opening at the tip. , A penetrating cylinder that reciprocates in the axial direction (2)
And a concrete pumping piston (3) axially reciprocating in the penetration cylinder (2) and the other of the concrete hopper (1) corresponding to a region where the tip of the penetration cylinder (2) abuts. A concrete delivery opening (11) provided on the side surface of the concrete, a ring-shaped seal (4) provided around the concrete delivery opening (11), and a penetration cylinder drive means ( 6 ) for driving the penetration cylinder (2). ) And a concrete pumping piston driving means ( 5 ) for driving the concrete pumping piston (3), wherein the concrete hopper (1) has a front surface on the inner surface of the concrete hopper (1).
In the strip-shaped area where the outer circumference of the penetrating cylinder (2) contacts
There are lubricant pressure inlet for pressing the lubricant consisting of cement milk is a mixture of cement and water to a concrete hopper (1) of the (7) is achieved by a concrete pumping device is provided at least one.

Further, it is preferable that a plurality of lubricant pressure inlets (7) are provided along the region where the penetration cylinder (2) passes. This is because the effect of assisting the movement of the penetrating cylinder (2) is large. Further, the lubricant pressure inlet (7) is preferably provided on the bottom surface of the concrete hopper (1). This is because the fluidity of concrete in this region is not good.

[0014]

The concrete pumping apparatus according to the present invention is a penetration cylinder type concrete pumping apparatus, in which the concrete is hard to be agitated, and the relatively stationary time is long, and the hardened area such as cement milk is hard to be hardened. The agent is injected at a high pressure so that the movement of the penetrating cylinder can always be kept smooth.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete pumping apparatus according to one embodiment of the present invention will be described in more detail below with reference to the drawings.

1 and 2 FIG. 1 is a schematic configuration diagram (front view) of a concrete pumping apparatus according to one embodiment of the present invention, and FIG. 2 is a side view thereof. In FIGS. 1 and 2, 1 is a concrete hopper (shown in cross section), and 2 is a penetration cylinder that penetrates watertightly into one side surface near the bottom surface of the concrete hopper 1 and reciprocates in the axial direction. (Shown in cross section), and 3 is a concrete pumping piston that reciprocates in the penetrating cylinder 2 in the axial direction. Reference numeral 11 is a concrete delivery opening provided on the other side surface of the concrete hopper 1 corresponding to a region where the tip of the penetration cylinder 2 contacts, and 12 is a delivery hose (shown in section), which is a concrete delivery opening. At 11, a communication is made with the concrete hopper 1. As described above, the delivery hose 12 is preferably provided with a check valve near the delivery opening 11.
Reference numeral 4 is a ring-shaped seal (shown in cross section) provided around the concrete delivery opening 11. 5
Is a penetration cylinder drive means for driving the penetration cylinder 2, and 6 is a concrete pressure feed piston drive means for driving the concrete pressure feed piston 3.

The concrete temporarily stored in the concrete hopper 1 is slowly agitated by an agitator (not shown) to prevent water from separating and hardening being accelerated.

Reference numeral 7 denotes a lubricant pressure inlet according to the gist of the present invention, which communicates with a lubricant reservoir 10 via a lubricant pipe 8 and a lubricant pressure pump 9. The lubricant reservoir 10 contains a lubricant such as cement milk, which is a mixture of cement and water. The discharge pressure of the lubricant press-fitting pump 9 is determined by the size (height) of the hopper 1, etc.
In this example, it is 100 kg / cm ² . The operation of the main body of the concrete pouring device is exactly the same as that described with reference to FIG.

In the concrete pressure-feeding device according to this embodiment, a plurality of lubricant pressure inlets 7 are provided on the bottom surface of the concrete hopper 1 in a region facing the reciprocating region of the penetrating cylinder 2, and this lubricant Agent pressure inlet 7
Lubricant such as cement milk penetrates through the cylinder 2
Is supplied between the concrete and the bottom of the concrete hopper 1, so that in this area (concrete is hard to agitate, concrete is hard to move, hard to harden), the concrete is made to move easily and hardens. Effectively prevented, the concrete pumping device operates with high efficiency.

[0020]

As described above, in the concrete pumping apparatus according to the present invention, the concrete is hard to be agitated, the relatively stationary time is long, and the hardened area such as cement milk is hard to be hardened. Since the agent is injected at high pressure, the movement of the penetrating cylinder is kept smooth at all times, and high-speed transportation of concrete to a long distance or to a high place becomes possible.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram (front view) of a concrete pumping apparatus according to the present invention.

FIG. 2 is a schematic configuration diagram (side view) of a concrete pumping device according to the present invention.

FIG. 3 is an operation explanatory view (part 1 is a cross-sectional view) of the concrete pumping apparatus according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete hopper 2 Penetration cylinder 3 Concrete pressurizing piston 4 Ring-shaped seal 5 Penetration cylinder drive means 6 Concrete pressurizing piston drive means 7 Lubricant pressure inlet 8 Lubricant piping 9 Lubricant pressurizing pump 10 according to the gist of the present invention Lubricant reservoir 11 Concrete delivery opening 12 Delivery hose

Continuation of the front page (56) Bibliography Flat 2-110267 (JP, U) Real deployment Sho 53-111405 (JP, U) Real deployment Sho 63-61497 (JP, U)

Claims (2)

(57) [Claims] 1. A concrete hopper (1) and a penetration cylinder (1) which penetrates watertightly into one side surface near the bottom surface of the concrete hopper (1), has an opening at its tip, and reciprocates in the axial direction ( 2), a concrete pumping piston (3) axially reciprocating in the penetration cylinder (2), and the other of the concrete hopper (1) corresponding to a region where the tip of the penetration cylinder (2) abuts A concrete delivery opening (11) provided on the side surface of the concrete, a ring-shaped seal (4) provided around the concrete delivery opening (11), and a penetration cylinder drive means ( 6 ) for driving the penetration cylinder (2). When the concrete pumping piston driving means for driving the concrete pumping piston (3) (5) and concrete pumping device odor with The said inner surface of the concrete hopper (1) intruded
In the strip-shaped area where the outer periphery of the binder (2) is in contact, the concrete hopper (1) is filled with cement milk.
At least one lubricant inlet (7) for injecting a lubricant
A concrete pumping device characterized by being provided individually. 2. A concrete pressure-feeding device, characterized in that a region where the lubricant pressure inlet (7) is provided is a bottom surface of the concrete hopper (1).